Prosthesis with surfaces having different textures and method of making the prosthesis

US11213397B2 · kind B2 · utility

Assignee

• DEPUY IRELAND UNLIMITED COMPANY · IE

Inventors

• Stephanie M. Wainscott · Warsaw, US
• Daren L. Deffenbaugh · Winona Lake, US
• Hengda D. Liu · Warsaw, US
• Andrew J. Martin · Carmel, US
• Jeffrey A. Rybolt · Fort Wayne, US
• Bryan J. Smith · Glastonbury, US
• Anthony D. Zannis · Fort Wayne, US

Key dates

• Filing date: Aug 7, 2019
• Grant date: Jan 4, 2022
• Expiry date: Jan 14, 2040

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22F2998/10
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A joint prosthesis system is suitable for cementless fixation. The system includes a metal implant component that has a mounting surface for supporting an insert. The metal implant component includes a solid metal portion and a porous metal portion. The porous metal portion has surfaces with different characteristics, such as roughness, to improve bone fixation, ease removal of the implant component in a revision surgery, reduce soft tissue irritation, improve the strength of a sintered bond between the solid and porous metal portions, or reduce or eliminate the possibility of blood traveling through the porous metal portion into the joint space. A method of making the joint prosthesis is also disclosed. The invention may also be applied to discrete porous metal implant components, such as augment.